<pre class="card card-block card-header">{{ myForm?.value | json }}</pre>
<form *ngIf="myForm" [formGroup]="myForm" class="form-inline d-flex align-items-center">
  <div class="form-group mb-3">
    <div class="btn-group" btnRadioGroup formControlName="radio">
      <label btnRadio="A" class="btn btn-primary mb-0">A</label>
      <label btnRadio="B" class="btn btn-primary mb-0">B</label>
      <label btnRadio="C" class="btn btn-primary mb-0">C</label>
    </div>
    <button class="btn btn-primary" (click)="myForm?.disabled ? myForm?.enable() : myForm?.disable()">Enable/Disable</button>
  </div>

</form>
